diff options
| -rw-r--r-- | err.c | 55 |
1 files changed, 37 insertions, 18 deletions
@@ -1,36 +1,55 @@ /* Report Unix errors */ +#include <stdlib.h> #include <stdio.h> +#include <string.h> #include <errno.h> -#if 0 -extern int sys_nerr; -extern char *sys_errlist[]; -#endif - -main(argc,argv) -int argc; -char *argv[]; - +int main(int argc, char *argv[]) { int f,n; + char *p; - if (argc==1) - { + if (argc == 1) + { fprintf(stderr,"%s:usage %s -t|err1 [.. errn]\n",argv[0],argv[0]); - exit(1); - } + exit(EXIT_FAILURE); + } if (!strcmp(argv[1],"-t")) - for(f=0;f<sys_nerr;f++) - printf("%3d : %s\n",f,sys_errlist[f]); + { + errno = 0; + + for(f = 0; errno != EINVAL && f < 256; f++) + { + errno = 0; + p = strerror(f); + + if (errno != EINVAL) + { + printf("%3d : %s\n",f,p); + } + } + } else + { for(f=1;f<argc;f++) - { + { n=strtol(argv[f],(char **)NULL,0); - if(n>=sys_nerr) + errno = 0; + + p = strerror(n); + + if (errno == EINVAL) + { fprintf(stderr,"%s:errcode %d invalid!\n",argv[0],n); + } else - printf("%3d : %s\n",n,sys_errlist[n]); + { + printf("%3d : %s\n",n,p); } + } + } + + return EXIT_SUCCESS; } |